<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../vue.js"></script>
</head>

<body>
    <div id="app">
        <h1>{{count}}</h1>

        <!-- prevent修饰符可以阻止默认事件，常见于form表单的submit事件 -->
        <button @contextmenu.prevent="">阻止默认事件</button>

        <br>
        <!-- .stop修饰符阻止传播 -->
        <div @click="fn1">
            outer1
            <div @click.stop="fn2">outer1</div>
        </div>
        <br>
        <!-- capture修饰符，把事件的传播方式改为捕获 -->
        <div @click.capture="fn1">
            outer3
            <div @click="fn2">outer4</div>
        </div>

        <br>
        <!-- .self修饰符：当事件要被处罚的时候，e.target是否是自身，如果是在触发事件 -->
        <div @click.self="fn1">
            outer5
            <div @click="fn2">outer6</div>
        </div>

        <br>
        <!-- .once修饰符：一次性事件 -->
        <button @click.once="fn1">触发fn1</button>
    </div>

    <script>
        Vue.config.productionTip = false
        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    count: 0
                }
            },
            methods: {
                fn1() {
                    console.log("fn111111");
                },
                fn2() {
                    console.log("fn222222");
                }
            }
        })
    </script>
</body>

</html>